#include "stdio.h"

int main(){
    int max_value(int array[][4]);
    int a[3][4]={{1,3,5,7},{2,4,6,8},{15,17,34,12}};
    printf("Max value is %d\n",max_value(a));
    return 0;
}

int max_value(int array[][4]){
    int i,j,max;
    max=array[0][0];
    for(i=0;i<3;i++){
        for(j=0;j<4;j++){
            if(array[i][j]>max){
                max=array[i][j];
            }
        }
    }
    return max;
}